Apparatus for setting and retrieving a bridge plug from a subter

Details Apparatus for setting and retrieving a bridge plug from a subter Apparatus for setting and retrieving a bridge plug from a subter

1989-10-19

1990-09-04

Dang, Hoang C.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166192, 166319, 166325, 166332, E21B 33127, E21B 3406

Patent

active

049536176

ABSTRACT:
An apparatus for setting and retrieving a bridge plug of the type which may be passed through a small diameter tubing, and may be sealed against a relatively large diameter casing by pressured fluid to inflate an elastomeric packing element carried by the bridge plug. The running tool is engagable with a valve housing by a J-slot connection and an axially shiftable, pressure balanced valve plug cooperates with the valve housing to open or close the fluid passageway therethrough extending to the inflatable elastomeric packing element. Upward movement of the running tool followed by left hand rotation effects the closing movement of the valve plug and the disengagement of the running tool. Downward movement of the running tool, while engaged with the valve housing, effects an opening of the plug valve.

REFERENCES:
patent: 2839142 (1958-06-01), Huber
patent: 2953206 (1960-09-01), Brown
patent: 3102594 (1963-09-01), Crowe
patent: 3250331 (1966-05-01), Boyle
patent: 3314479 (1967-04-01), McCullough et al.
patent: 3434538 (1969-03-01), Kilgore et al.
patent: 3454089 (1969-07-01), Brown
patent: 4646829 (1987-03-01), Barrington
patent: 4648448 (1987-03-01), Sanford et al.
patent: 4869325 (1989-09-01), Halbardier

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